Hello! I'm having trouble with this practice problem. I'm not too sure what I'm doing wrong. Thank you for your help!

Management Decision Systems (MDS) is a consulting company that specializes in the development of decision support systems. MDS has a four-person team working on a current project with a small company to set up a system that scrapes data from a collection of websites and then automatically generates a report for management on a daily basis. Activity A B Description Report generation Web scraping Testing Immediate Predecessor A, B Optimistic 2 4 1 Time (Weeks) Most Probable (a) Construct the project network. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen This answer has not been graded yet. 8 9 1 Pessimistic 12 (d) Should you use the estimate in (b) or (c)? O The probability estimate from (b) based on the critical path is more accurate. The probability estimate from (c) based on both paths is more accurate. The probability estimates from (b) and (c) are equal. 11 1 (b) Based solely on the critical path, estimate the probability that the project will be complete within 11 weeks. (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.) 0.8997 (c) Using all paths through the project network, estimate the probability that the project will be complete within 11 weeks. (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.) 0.8270 X